<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD><TITLE>cd manual page - Built-In Commands</TITLE>
<link rel="stylesheet" href="../docs.css" type="text/css" media="all">
</HEAD>
<BODY><H2><a href="../contents.htm">Tcl8.6.11/Tk8.6.11 Documentation</a> <small>&gt;</small> <a href="contents.htm">Tcl Commands</a> <small>&gt;</small> cd</H2>
<H3><A HREF="../UserCmd/contents.htm">Tcl/Tk Applications</A> | <A HREF="../TclCmd/contents.htm">Tcl Commands</A> | <A HREF="../TkCmd/contents.htm">Tk Commands</A> | <A HREF="../ItclCmd/contents.htm">[incr Tcl] Package Commands</A> | <A HREF="../SqliteCmd/contents.htm">SQLite3 Package Commands</A> | <A HREF="../TdbcCmd/contents.htm">TDBC Package Commands</A> | <A HREF="../TdbcmysqlCmd/contents.htm">tdbc::mysql Package Commands</A> | <A HREF="../TdbcodbcCmd/contents.htm">tdbc::odbc Package Commands</A> | <A HREF="../TdbcpostgresCmd/contents.htm">tdbc::postgres Package Commands</A> | <A HREF="../TdbcsqliteCmd/contents.htm">tdbc::sqlite3 Package Commands</A> | <A HREF="../ThreadCmd/contents.htm">Thread Package Commands</A> | <A HREF="../TclLib/contents.htm">Tcl C API</A> | <A HREF="../TkLib/contents.htm">Tk C API</A> | <A HREF="../ItclLib/contents.htm">[incr Tcl] Package C API</A> | <A HREF="../TdbcLib/contents.htm">TDBC Package C API</A></H3>
<H3><A NAME="M2">NAME</A></H3>
cd &mdash; Change working directory
<H3><A NAME="M3">SYNOPSIS</A></H3>
<B>cd </B>?<I>dirName</I>?<BR>
<H3><A NAME="M4">DESCRIPTION</A></H3>
Change the current working directory to <I>dirName</I>, or to the
home directory (as specified in the HOME environment variable) if
<I>dirName</I> is not given.
Returns an empty string.
Note that the current working directory is a per-process resource; the
<B>cd</B> command changes the working directory for all interpreters
and (in a threaded environment) all threads.
<H3><A NAME="M5">EXAMPLES</A></H3>
Change to the home directory of the user <B>fred</B>:
<P>
<PRE><B>cd</B> ~fred</PRE>
<P>
Change to the directory <B>lib</B> that is a sibling directory of the
current one:
<P>
<PRE><B>cd</B> ../lib</PRE>
<H3><A NAME="M6">SEE ALSO</A></H3>
<B><A HREF="../TclCmd/filename.htm">filename</A></B>, <B><A HREF="../TclCmd/glob.htm">glob</A></B>, <B><A HREF="../TclCmd/pwd.htm">pwd</A></B>
<H3><A NAME="M7">KEYWORDS</A></H3>
<A href="../Keywords/W.htm#working directory">working directory</A>
<div class="copy">Copyright &copy; 1993 The Regents of the University of California.
<BR>Copyright &copy; 1994-1996 Sun Microsystems, Inc.
</div>
</BODY></HTML>
